Binder for loose leaves



Nov. 13, 1928. 1,691,257

w. H. SMITH BINDER FOR LOOSE LEAVES Filed Aug. 2, 1926 2 Sheets-Sheet 1I ATTORN EY Nov. 13, 1928.

W. H. SMITH BINDER FOR LOOSE LEAVES Filed Aug. 2, 1926 2 Sheets-SheetPatented Nov. 13, 1928.

WILLIAM E. SMITH, OF SAN FRANCISCO, CALIFORNIA.

BINDER FOR LOOSE LEAVES.

Application filed August 2, 1926. Serial No. 126,415.

This invention relates to improvements in binders for loose leaves, andmore particularly to transfer binders, and consists of a novelconstruction and combination of the parts. Among the objects of thisinvention, are to produce a binder in this class, that exposes noexterior metal parts liable to injure the hands of the operator orscratch and mar polished desk tops upon which the bound books may belaid; that will present no protruding parts upon any of the exteriorsurfaces of the binding to interfere with its compact storage in theminimum of space or inconvenience in inserting and withdrawing it frombetween other volumes of similar nature; that may be cheaply andconveniently produced and that is easily adaptable to the binding ofsales sheets, bills of lading, stock records, proof sheets, invoices,ledger sheets, and other perforated sheets used, and known as loose leafrecord sheets; and that is easily loaded with sheets'to be boundw1thoutextraneous mechanicalaids. jects and advantages will appear asthis description progresses.

In this specification and the annexed drawings, the invention isdisclosed in the form I considered the best, but I do not wish to beunderstood as limiting the invention" to this form, as it may beembodied in other forms,

. and it is also to be understood that in and by the claims followingthe description it is desired to cover the invention in whatsoever formit may be embodied.

ings, Figure 1 is a side elevation of a binder constructed in'aceordancewith this 1nvention, one of the binding posts being shown in fragmentarysection and extending through perforations intthe sheets,=to form thebound back of the book; the mass of leaves are indicated in outline bythe dotted lines. Figure 2 is a fragmentary perspective view of thelower cover, partiall broken away to show the construction oft 1e coverand the application of the kraft paper tube and ferrule adapter to fitvarious sizes of leaf perforations. Figure 3 is a plan View. of theinside of a cover in the process of fabrication, in ac- Figure 4 is anenlarged detail edge view of the same after completion. The channel ispartially broken away through the perfora- Other ob I In theaccompanying one sheet of draw cordance with the method of thisinvention.

binding fabric 4- is glued to the outer surface of the board and lappedover the outer ends and the sides as at 5, and glued tothe inner surfaceof the board. The binding 45 and the folds 5, are extended beyond theback edge of the board and a strip of sheet metal 6, is inserted withits ends under the folds 5, and its edge 7 parallel withand spaced fromthe edge 8 of the backingboardcover, so that the cover and fold at hingestrip at 9.

The further extensionsof the binding 4:, are then glued together to forma double thickness of the fabric, enclosing the strip of, metal 6, andextending around the outer edge 10 of the metal strip 6 and glued, toen-' tirely enclose the metal strip, and terminates and 5 form aflexible as at 11 making a double thickness at the hinge 9. While themetal strip'is still flat it is inserted between the dies of a punchingmachine (see Figure 3) equipped with proper gages to determine the exactcenters between the perforations 12','which are cut entirely through themetal strip and theoverlying binding 4, enclosing the same. -After thepunching operation the metal strip is in sorted between the jaws of abreaker and it is bent back upon itself at 13, to form a U shaped backedge for the cover, the outer dimensions of which are substantially thesame as the thickness of the cover, and forming the channel 14, the edge10 terminating adja- I cent to the line of the hinge 9. The perforations12, thus appear only upon the inner flanges of the channels. The innersurfaces of thecovers are finished bythe addition of a sheet of heavypaperl, or other suitable material pasted to the cover and overlappingthe folds 5 and the ends 11. As previously stated bothfcovers 1 and 2identical in shape and construction and: may be'of any diperforations 12are spaced apart any mensions to suit standard or special sizes of looseleaves to be bound therebetween.

The binder posts consist of two lengths of tubing 15-16 telescopingsnugly one within the other,'and both flanged out to engage the integralheads 18. The tube 15 has a hole at 19 in the body thereof, adjacent itsend, with the slot 20 opposite thereto. The pawl21 is confined withinthis tube with its toothed sur face adapted to protrude through saidslot 20. The pawl is retained in position bythe spring 22 confinedbetween the pawl 21 and a plug in the end of the tube 15. When the tubes15-16 are telescoped the teeth of the pawl 21 contact the inner surfaceof the tube 16 without resistance, but when it is attempted to separatethe tubes, the teeth'of the pawl engage the inner surface of the tube16, locking the tubes together, forming in effecta positive clutch.

The perforations 12have the enlargements 12 opening therefrom, adaptedto pass the heads 18 of the posts. The posts 15-16 are then forced intothe smaller openings 12 and are firmly held by the heads 1.8, within thechannel 1 1 formed by the metal strip 6. These of the standarddistances, ranging from 2 to '7 inches between centers that are standardpractice, or they may be spaced apart any desired distance;

This invention operates substantially as follows: The covers 1 and 2 arelaid face up, as shown in Figure 2, the heads 18 of the various binderpost-s 15*16 are inserted in the openings 12 in thecovers. The cover 1is then laid aside for the moment and the perforated leaves X arethreaded onto the posts in the cover 2-, up to near the topof the posts15; then the remaining leaves. up to the capacity of the posts arethreaded onto the posts 16 that are'in the'cover 1. The cover 1 istheninverted over the cover 2 and the posts i the cover 1 are telescopedoverthe posts in the cover '2, the telescoping tubular posts 15-16extending through the perforations in the leaves X. forced down over thelower posts 15 the two sections are locked by the clutch 21, againstretraction. The necessary pressure is then exerted on the top cover,opposite the posts, to cause them to compress the leavesbetween to thedesired extent,-which elfectually binds all of the leaves into a singlevolume having a smooth exterior covered by the covers1and 2 and securelyand permanently bound together at the back by the posts 15 -16. Thecoversl and 2 freely swing ontheir respective hinges at 9 to permitaccess to the leaves bound between the covers.

To add a proper finish to the back of the book, between the covers 1 and2 I provide. the overlapping backlng sheets 23and 24,

scored longitudinally at the points 25 to permitof easyand accuratebendingat this As the-top posts 16 are" point and forming the rightangle flange 26 thereon. This backing is preferably made of heavy kraftpaper, guinined on one side, the two halves of the backing beingthreaded onto the posts in their respective covers 1 and'2, andprojecting outward past the ends 13 thereof,until the binding of theleaves 1i is complete. The inner surface of the backing 23 is moistenedand forced against the outer surface of the backing, 2%, pressureagainst the backing forcing it against the end of the bound sheet-scauses the backing sheets 23 and 24. to adhere and form a permanentsurface for thereception of tubulated matter indicating the contents ofthe book.

The various manufacturers of the so called loose leaf systems ofbookkeeping and record sheets, adopt certain arbitrary standards as tothe size and shape of the perforations in the binding margins of thesheets, the diameters of such perforations ranging from the smalldiameter of the posts 15-16 up to one-half an inch, Since it isimpracticable to meet these variations in transfer binders within theprice of such, recourse is" had to the expedient shown in Figure 2, inwhich a fragmentary section of the paper tube 27 made of heavy kraftpaper rolled upon itself to lit the size of the perforation in the sheetto be filled and snuglyfit over the posts 15-46 is chosen andcut toa-length equal to'the depth of sheets, see Fig. 1, to be bound betweenthe covers 1 and 2; in this manner cheaply adapting.this invention tothe wide range of conditions to be met in the perforations of looseleaf-sheets at present upon the market. I

"While the form of posts shown in the drawlugs and above described is atpresent preferred,because of its simplicity, adaptability and cheapnessof production, there are other formsof'posts at present uponthe market,

such as, parallel semi-circular ratchet-posts and other'forms oftelescoping posts, in which one-half of the post is tubular to receivethe shank of the complementary post,

telescoping therein and secured'by various 1.

forms of clutches to prevent withdrawal or separation of the postsections from ,each other, as well as wires and other connecting meansadaptable to this invention.

For convenience in withdrawing a bound volume from among others on theshelves, the length of tape 26 is glued totheinner flange with itsendfolded over the edge 10 and terminating within the channel 1 1, and itsopposite end extending beneath and beyond the backing to form the tab8l,to be grasped by the operator in withdrawing the volume. Having thusdescribed this invention, what Iclaim' and desire to secure by LettersPat' cut is? 1 LA transfer binder comprising opposed covers havingchannels hinged to the ed thereof; binding means extending between saidchannels and adapted to engage the innor plates thereof and terminatingWithin said channels; backing sheets attached to each of said coversadapted to be overlapped and attached to each other when the binder isfilled; and a strip of tape having an end secured to one of said coversprotruding beyond said binder.

2. A transfer binder comprising opposed covers having channels hinged tothe edges thereof; binding means extending between said channelsvandadapted to engage the inner plates thereof and terminating within saidchannels; backing sheets attached to each of said covers adapted to beoverlapped and attached to each other when the binder is filled; and astrip of tape having an end secured to one of said covers protrudingbeyondsaid binder.

3. A cover for transfer binders comprising a stiffening board; a bindingfabric having its lateral edges folded over the edges of said board andextending beyond one end of said board to form a hinge; a metal channelhinged to said board by said binding fabric, the inner plate of saidchannel being per'lo rated; and a binder post having a shank pass-- ingthrough said perforation in and a head engaging under, said plate' 4:. Acover for transfer binders comprising a stiffening board; a bindingfabric having its lateral edges folded over the edges of said board andextending beyond one end of said board to form a hinge; a strip of metalenclosed wlthln said folded edges and bent back upon itself to form achannel, one plate of 5. A cover for transfer binders comprising astiffening board; a binding fabric having its lateral edges folded overthe edges of said board and extending beyond one end of said board toform a hinge; a strip of metal enclosed within said folded edges andbent back upon itself to form a channel flush with the thickness of saidcover said binding fabric terminating at the open edge of said channel.

6. A transferbinder comprising opposed covers each having a channelhinged to an edge thereof; binding means extending between said channelsand adapted to engage the inner plates thereof and terminating withinsaid channels; flexible adhesive backing sheets attached to eachof saidcovers and adapted to be overlapped with respect to each other when thebinder is filled.

7. The method of forming covers for transfer binders comprising foldingthe adhesive edges of a binding fabric over the lateral dges of astiffening board so that it extends beyond the end of said board;inserting a transverse stripof metal beneath said folded edges andspaced away from the end of 'said board; perforating said strip andfabric to engage binder posts; and then bending said strip back uponitself to overlie its unperforated part. 7 v

In testimony whereof I have hereunto affixed my signature.

WILLIAM H. SMITH.

